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nix-infra/SETUP.md

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Bootstrapping a New Device

This guide assumes you have a somewhat sane sops setup.

  1. First, boot the NixOS live environment (minimal ISO is recommended).

  2. Then, get the harddrive ID using lsblk or fdisk -l:

    sudo fdisk -l
ls -lah /dev/disk/by-id | grep -i <drive disk ID ie. sda>

Example output:

[nix-shell:~]$ sudo fdisk -l
Disk /dev/loop0: 1.14 GiB, 1221455872 bytes, 2385656 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 256 GiB, 274877906944 bytes, 536870912 sectors
Disk model: QEMU HARDDISK
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

[nix-shell:~]$ ls -lah /dev/disk/by-id | grep -i sda
lrwxrwxrwx 1 root root   9 May  5 13:20 scsi-0QEMU_QEMU_HARDDISK_drive-scsi0 -> ../../sda

[nix-shell:~]$ # disk path: /dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi0
  1. Manually create a host configuration by modifying/duplicating hosts/<target_host_to_base_off_of> to hosts/<new_host_name>. Be sure to modify the hostname in hosts/<new_host_name>/configuration.nix.
  2. Add the host to flake.nix.
  3. Modify the disko configuration for our host to use the correct disk ID that we found earlier.
  4. Make any other additional modifications if needed.